Engraving-machine.



No. 660790. Patented Oct. 30, I900. w. s. EATON.

ENGRAVING MACHINE." (Application filed Aug. a, 1906.) M40 hloqel.) 2 Shqets.$heat I.

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Mil/ m .Patented Oct. 30, I900. W. S. EATON. ENGRAVING Momma.

(Application filed Aug. 8, 1900.)

sNo Modal.) 2 Sheets-Shoat 2.

UNITED ST TES sueaavisediaofliss.

srmmourox am part of gamma commuted 80. I000. I

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To all whom it may concern: a

Be it known that I, WILLIAM S.- EATON, a citizen of the United States, and a resident of Sag. Harbor,-Sufl.'olk c'ounty, State or New 'York,-'have invented certain new and useful Improvements in Engraving Machines, of which the following is a specification.

This invention-relates to an engraving-machine of the class called routing-machines and in which the engraving-tool isrotated so as to mill agroove into the work-piece. The machine is so constructed that the work-piece is movable in unison with the tracer, that power may be readily applied to the'routingtool, and that the depth of the groove'cut into the work-piece is under the constant control of the operator.

In the accompanying drawings, Figure 1 is a plan of a gang-machine constructed according to my invention; Fig. 2,-a vertical section on line 2 2, Fig. 1; Fig. 3, a sectional 'elevation taken on line 3 3, Fig. 1; and'Fig. 4 a; sectional elevation similar to Fig. 2, showingthe parts in a diflerent position.

The letter a represents the frame of the. machine, having a horizontal bed-plate c, which. is provided with a pair of parallel grooves or rails a These rails are engaged by the wheels or rollers b of a lower carriage ing at right angles to the rails a.

b, which on its upper face is provided with a pair of parallel grooves or rails I), extend- The rails b are engaged by the wheels or rollers -cof an upper carriage c, which is thus adapted to be moved horizontally in any direction.

means of a pivoted handle 01, which is adapted to be moved byhand. This handle is projvided with the tracing-tool d, the point of which engages the pattern A to be reproduced and which is supported bya table a. In.order to hold the pattern in position, the table a, is provided witha movable jaw a, whichc, movable in a groove c of the table.

upon the latter by Motion is imparted to the carriage c by 8 841016582. mead.)

" 'machine'maybe-oitl l graving' a single work-piece orfor' engraving several work-pieces si m ultaneonsly,the drawings showinga gang-machine with three routring-tool spindles e. These spindles are mounted in bearings e and are driven'by a common belt 8', running over guide-pulleys I a, conepulleys e on spindles e,and tension-pulleys e i The bearings e. are clamped to a rock-shaft f,,hung across the upper carriage cand oseillatingon center's f. The rock-shaft f is ,provided with a rearwardly-extending armf, influenced bya'springf whichtends'to rock the shaft 1 backward and to lift the routing tools e off the work-pieces'B.

In order' to rock the shaft f forward and lower ,thetools into operative engagement with the-work-pieces, the shaft f is provided with a second arm f, adapted to befengaged by a cam.g,= formed on one end of a curvedlever g','pivoted to frame a'at g. The other end of the lever g is connected to a treadle h by rod it; Thus by depressing the treadle the cam g will, by engaging arm f, tilt the roclvshaft forward against action of spring f, and thus force the routing-tool'against and into the work-piece, according to the degree of pressure placed upon the treadle.

" The depth to which the routing-tool may i be introduced may be regulated by an adjnstable stop 2', that limits'the play of arm f.

The, operation of the machine will be'readily understood. .The pattern and work-pieces being adjusted, the routing-tools are lowered pressure uponth'e'treadle h.v I The handle d is now manipulated to guide thetracing' to'ol (1 over the'pa'ttern and to impart a corresponding motion to the ta-' ble 0, and consequently to the work-pieces B. Thus the. latter are guidednnderneath the rotating routing-tools s and the design of pattern A is reproduced uponthe work-pieces. When the operation is completed,pressure uponthe tread le is removed,so that the spring f is free to rock the shaft f backward and cause the routingtools to clear the workpieces.

It-will .be-seenthat in myimproved ma-- chine routing-work may be quickly and ac curately executed, that the machine may be readily driven and manipulated, and that the to engage seid'arm and to rock the shaft fordepth of the groove cut into the work-piece \vard, and a stop fur limiting the movement is under the constant control of the operator. of the rock-shaft, substantially as specified.

What I claim isv Signed by me atNew York city, county and 15 y In an engraving maehine, the combination State of New'York, this 7th day of August,

of a, freely-m(l)lvable table, :With at tracer mov- 1900.-

abletherewit a roek-sha t oxtendin em the table, a routing-tool having a ixearihg Y W T T that is mounted upon the rock-shaft, a spring Witnesses:

10 adapted to rock the shaft backward; an arm I BABNIT 'JADLOVKIN,

depending fromthe rock-shaft,acam adapted BEOKIE J. GEIGER. 

